Rather than having an e-mail conversation with someone in which you bat correspondence back and forth, all parties can view the message, or wave, at the same time.

There's the sense, in a long e-mail conversation, that both of you are already guilty in some way, playing hooky from work.

It also said he took part in 'appalling' e-mail conversations.

For a long time it wasn't possible to directly download chat logs that are not attached to an e-mail conversation, although some workarounds had been found.

They spend a further one hour and 41 minutes organising the evening via text messages, phones and e-mail conversations.